In honor of Ridley Scott's upcoming sci-fi feature "Prometheus," CelebTV has put together some of the best and worst sci-fi movies of all time. Some of the movies, like "Terminator 2," are indisputable classics. Others, like "Plan 9 From Outer Space," are so terrible they're great. Check out the clip below for some truly awful and amazing flicks.

There's plenty of bad sci-fi out there, but when it comes to good sci-fi, your options are limited. You could go with an obvious choice, like the original "Star Wars" trilogy or Steven Spielberg's "Jurassic Park" classic; or you could go with something a little more subtle, like Scott's cult favorite "Blade Runner" or "2001: A Space Odyssey." If you don't see your favorite, feel free to write it in. The choice for best sci-fi movie is yours to make!

"Forbidden Planet"- Anne Francis & Leslie Nielsen, teleporters a decade before Star Trek, special effects that had never been seen before, 60 gallons of robot replicated Kansas City "Ancient Rocket" Bourbon and the unlikely comedic pairing of Earl Holliman with Robby the Robot. Those combinations spell instant classic.